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Finding the Fourth Proportional to 1,274,240,718.56, 1,758,540,570.33 and 772,470,651.89

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Solution

The fourth proportional to 1,274,240,718.56, 1,758,540,570.33 and 772,470,651.89 is: 1,066,063,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,240,718.56 : 1,758,540,570.33 = 772,470,651.89 : x
  2. Step 2: Convert to fraction form
    1,274,240,718.56/1,758,540,570.33 = 772,470,651.89/x
  3. Step 3: Cross multiply
    1,274,240,718.56x = 1,758,540,570.33 × 772,470,651.89
  4. Step 4: Simplify right side
    1,274,240,718.56x = 1,358,420,980,729,034,752
  5. Step 5: Solve for x
    x = 1,358,420,980,729,034,752/1,274,240,718.56
  6. Step 6: Final answer
    x = 1,066,063,076.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.